EN ISO 14122-4 Compliance Guide

En Iso 14122-4 Fixed Ladder Cage Requirements

EN ISO 14122-4 fixed ladder cage requirements — hoops, 3m rule, clearances. Free compliance checklist and quote. ISO 14122-4:2016 compliant; DoC and test reports with order.

ISO 14122-4:2016 3m Rule 1500mm Hoops Free Checklist
EN ISO 14122-4 fixed ladder cage requirements in an industrial setting
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Compliance Quick Reference

14122-4 Fixed Ladder Cage Rules

The key EN ISO 14122-4 fixed ladder cage requirements — 3m rule, 1500mm hoop spacing and clearances — answered at a glance.

RequirementEN ISO 14122-4 ValueOur standard build
Cage Start (3m rule)Cage required above 3 m of climbcage starts at 2.2 m
Hoop Spacing1500 mm max1500 mm — the maximum permitted
Hoop Sizenot fixed by the standard40×5 mm flat bar
Vertical Strapsnot fixed by the standard30×3 mm
Cage Diameternot fixed by the standardΦ700 mm
Clear Widthclimbing width 400–600 mm between stiles500 mm between stiles
Rung Spacing225–300 mm uniform280 mm
Load Rating1.5 kN per rung1.5 kN per rung, verified on the structural calcs
StandardISO 14122-4:2016DoC names the edition per order

3m Rule & Hoops

EN ISO 14122-4 Ladder Cage – 3m Rule & Hoops

We build every fixed ladder cage to the EN ISO 14122-4:2016 dimensions — the 3m cage start threshold and 1500mm hoop spacing included.

3m Cage Start

Cage begins 3 m above the floor or landing.

1500mm Hoops

40×5 mm hoops at 1500 mm max spacing.

EN ISO 14122-4 fixed ladder cage requirements — safety cage assembly

Compliance & Documentation

Compliance & Documentation (ISO 14122-4:2016 / DoC)

ISO 14122-4:2016 compliant; DoC and test reports with every order — plus a free compliance checklist to verify your existing ladders.

  • ISO 14122-4:2016 DoC

    Declaration of Conformity with every order

  • Test Reports

    Load and dimensional test reports included

  • Free Compliance Checklist

    Verify existing ladders against the 14122-4 rules

Inspection of an EN ISO 14122-4 fixed ladder cage

Factory-Direct, Docs Included

Free Compliance Checklist & Quote

Factory-direct EN ISO 14122-4 fixed ladder cages with a free compliance checklist and a 24-hour quote. Production typically takes 15–25 working days.

Free Compliance Checklist

Verify hoops, 3m rule and clearances against ISO 14122-4:2016.

24-Hour Quote

Itemized factory-direct pricing within 24 hours of your request.

DoC & Test Reports

Compliance file ships with every order at no extra charge.

Copy These Lines Into Your RFQ

EN ISO 14122-4 Procurement Checklist — the Seven Lines That Matter

European tenders reward precision and punish paraphrase. When your RFQ states the seven lines below verbatim, every bidder prices the same ladder — and the DoC that arrives months later can be checked line against line against what you ordered.

RFQ LineThe Clause Behind ItOur Standard Answer
"Rung spacing 225–300 mm, single-bar rungs of at least 22 mm"the geometry rule every tape check starts from280 mm spacing standard; rung section up-sized to the 22 mm minimum where your spec enforces it
"Climbing width 400–600 mm between rails"the width band that fits a climber with equipment500 mm clear width — mid-band by design
"Safety cage above 3 m of climb"the trigger that turns a ladder into a caged laddercage from 2.2 m, Φ700 mm, hoops 40×5 mm at 1500 mm centres
"No single flight over 6 m; rest platforms at the breaks"the flight cap that structures every tall climbflight layout on the GA drawing at quote stage, platforms in the same kit
"Ladder safety system provided above 10 m total climb"the threshold where the system becomes mandatory alongside the cageLSS-ready stringer fabricated with the cage intact — system scope named in the quote
"Hoop spacing not exceeding 1500 mm"the cage band that keeps a falling climber insidehoops at the 1500 mm maximum permitted, vertical straps 30×3 mm between
"DoC to EN ISO 14122-4:2016 plus MTC 3.1"the documentation half of conformityboth in the crate, plus structural calcs and trial-assembly photos

Seven lines, one page — forward them as-is, or send us your existing RFQ and we mark the gaps against this checklist free.

Cage Alone, or Cage Plus System?

EN ISO Path Selection — New, Existing and In-Between

Under 14122-4 the cage is not an alternative to a system — above 10 m they coexist, and below 3 m neither is asked for. The rows below cover the situations European buyers actually sit in, including the awkward ones: inherited ladders, relocations and machinery access.

Your SituationThe Rule That DecidesOur Supply
New build, climb under 3 mcage not triggered; geometry bands still governuncaged ladder, 280 mm rungs, 500 mm width, DoC to 14122-4
New build, 3 to 10 mcage mandatory, flights capped at 6 m, system not yet requiredcaged multi-flight build with platforms at the breaks
New build, over 10 mladder safety system mandatory alongside the cagecaged, LSS-ready package — system integrator scope coordinated in writing
Inherited ladder at 12 m, cage only, no systemthe asset predates the threshold logic — the gap is the system, not the cageLSS-ready conversion kit path quoted against the existing stringers
Ladder moving between EU sitesthe destination inspection applies the current edition, not the origin's memorygap analysis against 14122-4:2016 before relocation, documented
Machinery access, not building access14122 governs machine-mounted access as machinery part four of the seriesmachine-mounted caged builds with saddle brackets to your frame geometry

Climb height plus situation — two facts, and the third column becomes your purchase order, quoted inside 24 hours.

Feature — Advantage — Your Outcome

EN ISO 14122-4 Features That Answer an Audit

Five features, each mapped to a 14122-4 check a notified reviewer or client auditor might run.

FeatureAdvantageYour Outcome
Rungs at 280 mm, 22 mm optionmid-band spacing with the single-bar minimum availablegeometry row of any audit closes on sight
Cage from 2.2 m, hoops at 1500 mmcage starts before the 3 m trigger, hoops at the 1500 mm maximum permittedtrigger check passes with margin, hoop check holds the permitted maximum
Flights engineered to 6 m breaksflight cap and platform rule designed intall climbs pass without a platform count argument
DoC naming EN ISO 14122-4:2016edition-precise conformity statementdocument review ends at the first page
LSS-ready stringer above 10 msystem mounting without ladder reworkthe 10 m threshold costs a rail kit, not a rebuild

Get My Compliance Checklist

Get My Compliance Checklist & Quote

Checklist and quote within 24 hours. Tell us the height, region, material and quantity for your EN ISO 14122-4 project.

  • 3m rule & 1500mm hoop spacing
  • ISO 14122-4:2016 compliant
  • DoC & test reports included
+ More specifications (height, quantity, cage, standard)

Free quote · Free drawing review · No obligation

Deep Dive — The 3 / 6 / 10 m Decision Ladder

How EN ISO 14122-4 Decides What Your Ladder Needs

EN ISO 14122-4:2016 reads like a decision tree built on three numbers. Start at 3 m: once the climb exceeds 3 m, a safety cage enters the design. Move to 6 m: no single flight may run longer than 6 m, so taller climbs are broken by rest platforms rather than climbed in one push. Arrive at 10 m: a ladder safety system becomes mandatory, and it works alongside the cage rather than replacing it.

Around those thresholds sit the geometry rules that make the ladder itself compliant — rung spacing between 225 and 300 mm, a climbing width of 400 to 600 mm between the rails, single-bar rungs of at least 22 mm, and cage hoops spaced no more than 1500 mm apart. Our standard build — Φ20 rungs at 280 mm, 500 mm width, hoops 40×5 at 1500 mm — lands mid-band on every row, with up-sizing available where a client enforces the 22 mm rung minimum.

Walk the table top to bottom and every requirement for your climb height is on one screen.

Your Climb HeightWhat the Standard RequiresHow We Build It
Up to 3 mCage not yet triggered; geometry rules still applyStandard rung and width geometry; cage optional per spec
Over 3 mSafety cage required for the climbΦ700 cage, hoops 40×5 at 1500 mm centres
Flights over 6 mRest platforms break the climb — no single flight over 6 mPlatform positions fixed on the GA drawing before quote
Above 10 mLadder safety system required; cage remainsLadder fabricated LSS-ready with the cage intact
Any heightRung spacing 225–300 mm; width 400–600 mm; single-bar rungs ≥ 22 mm280 mm spacing and 500 mm width standard; rung size per spec sheet
DocumentationConformity shown through the documented DoC fileDoC naming EN ISO 14122-4:2016 plus MTC 3.1 with every order

Why 6 m Flights Matter

The platform rule quietly improves rescue, fatigue and inspection outcomes — and satisfies landing rules in other regimes, from Singapore WSH to tender clauses citing multiple standards.

Checklist in 24 Hours

Send the climb height and the free compliance checklist comes back mapped to your ladder — every row of the decision table, ticked against your dimensions, with the quote.

EN ISO 14122-4 Cage Requirements FAQ

What is the EN ISO 14122-4 3m rule?
The 3m rule is the cage start threshold — the guard cage must begin at 3 m above the floor or landing and continue for the rest of the climb.
What is the hoop spacing under EN ISO 14122-4?
EN ISO 14122-4 specifies 1500 mm maximum hoop spacing for fixed ladder guard cages.
Is the compliance checklist really free?
Yes — we send a free EN ISO 14122-4 compliance checklist and a quote within 24 hours.
What climbing width does EN ISO 14122-4 require between the side rails?
The standard sets a climbing width of 400–600 mm between the side rails. Our standard build sits at 500 mm — mid-band, and consistent with the clear climbing dimension US clients see on the ANSI spec sheet.
What is the minimum rung diameter for single-bar rungs under EN ISO 14122-4?
The standard requires at least 22 mm for single-bar rungs. If your specification enforces the 22 mm figure, tell us at quote stage — the rung size is confirmed on the spec sheet and locked into the drawing set before production starts.
Does EN ISO 14122-4 require a CE mark on the ladder itself?
No nameplate convention applies to fixed ladders here. Under the machinery framework conformity is demonstrated through documentation — the Declaration of Conformity referencing the designated standard travels in the project file, and that is exactly what European clients and inspectors expect from us.
Does EN ISO 14122-4 apply outside Europe, or is it only an EU requirement?
It applies by contract rather than by law. Gulf, Asian and African EPC specifications routinely adopt EN ISO 14122-4 as the project standard, and we then name it on the Declaration of Conformity exactly as a European client would — same dimensions, same compliance file.
What changes at 10 m of climb — more cage, or a different system?
Above 10 m the standard requires a ladder safety system, and the cage stays in place as part of the assembly. Between 3 m and 10 m a compliant cage alone is the accepted solution, which is why most European tank and silo ladders in that range are simply caged, with flights capped at 6 m by rest platforms.

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